RANKING · 2024 ACS · 56 SHOWN OF 56

Largest households, Montana counties

Montana counties ranked by average household size (2023 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide.

MontanaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2000

01Big Horn County, MTMT12,7523.32–

02Roosevelt County, MTMT10,2423.32–

03Glacier County, MTMT13,4633.04–

04Blaine County, MTMT6,8602.96–

05Broadwater County, MTMT8,4932.70–

06Chouteau County, MTMT5,8652.67–

07Rosebud County, MTMT8,2532.63–

08Pondera County, MTMT6,0722.58–

09Lake County, MTMT33,3922.56–

10Hill County, MTMT16,1672.53–

11Richland County, MTMT11,3772.53–

12Wibaux County, MTMT8852.52–

13Liberty County, MTMT1,9572.52–

14Garfield County, MTMT1,1482.50–

15Jefferson County, MTMT13,3292.50–

16Valley County, MTMT7,3852.50–

17Powder River County, MTMT1,7812.48–

18Ravalli County, MTMT48,5822.48–

19Flathead County, MTMT115,4292.47–

20Teton County, MTMT6,4962.43–

21Madison County, MTMT10,0262.42–

22Sheridan County, MTMT3,4362.42–

23Sanders County, MTMT14,0622.40–

24Toole County, MTMT5,2112.40–

25Stillwater County, MTMT9,4452.38–

26Musselshell County, MTMT5,5822.37–

27Yellowstone County, MTMT172,6922.37–

28Sweet Grass County, MTMT3,7622.37–

29Carbon County, MTMT11,4662.36–

30Dawson County, MTMT8,6922.33–

31Gallatin County, MTMT128,7402.33–

32Golden Valley County, MTMT8442.32–

33Cascade County, MTMT85,0292.30–

34Lewis and Clark County, MTMT75,3312.30–

35Lincoln County, MTMT22,3282.30–

36Phillips County, MTMT4,2032.29–

37Custer County, MTMT12,0342.28–

38Fallon County, MTMT2,9592.28–

39Mineral County, MTMT5,1852.28–

40Judith Basin County, MTMT2,1622.25–

41Prairie County, MTMT1,1122.24–

42Silver Bow County, MTMT36,1182.24–

43Missoula County, MTMT123,5132.23–

44Powell County, MTMT7,1572.22–

45Granite County, MTMT3,6582.21–

46Beaverhead County, MTMT10,0432.21–

47Wheatland County, MTMT2,1002.18–

48Carter County, MTMT1,3832.14–

49Meagher County, MTMT2,1372.13–

50Fergus County, MTMT11,8252.12–

51Park County, MTMT18,2142.08–

52McCone County, MTMT1,7202.04–

53Treasure County, MTMT7282.03–

54Petroleum County, MTMT5482.02–

55Daniels County, MTMT1,6122.01–

56Deer Lodge County, MTMT9,7091.97–

SHOWING 1–56 OF 56

Download CSV (full list, 56 rows)

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES